Captions Generator

Captions Generator is a browser-based AI subtitle tool that transcribes video or audio in 100 languages, lets you edit and style captions, and exports a watermark-free MP4 or SRT, VTT and TXT files.

Captions Generator is a browser-based tool that turns the speech in a video or audio file into timed, styled subtitles. Transcription covers 100 languages with automatic language detection, and each word is aligned to the audio so captions appear at the moment they are spoken. It can even handle English and Chinese mixed within a single sentence, which is uncommon among caption tools. The workflow has three stages. A user drops in an MP4, MOV, MKV, MP3, WAV or SRT file, edits any misheard word in the transcript, then picks a caption style and exports. Output options include a captioned MP4 with the text burned in, or separate SRT, VTT and TXT files for YouTube, Premiere, CapCut and other editors. Existing SRT or VTT files can be imported, restyled and burned into a video, or converted to another format. Captions render at the size of the source video, so vertical 9:16 clips for TikTok, Reels and Shorts work the same way as landscape footage, and captions can be dragged anywhere in the frame. Privacy is handled by rendering in the browser: the video stays on the device and only the audio track is sent for transcription, which the site says is not stored. Translation into more than 100 languages is free, including right-to-left scripts such as Arabic and Hebrew. The tool suits short-form creators, YouTubers, educators and teams that need accessible video without installing an editor. The free plan allows editing videos up to 90 minutes and exporting up to 3 minutes at 1080p without a watermark, with 30 minutes of captions a month. The paid Pro plan adds unlimited AI captions, 4K export, bilingual captions, keyword highlights, karaoke-style word animation and custom fonts. Compared with full video editors that bundle captioning, this is a narrower, faster single-purpose option.